The Colt LE6940 Monolithic Advanced Law Enforcement Carbine is an evolution of the 6920. This rifle feature's Colt's new monolithic upper receiver. In addition to an uninterrupted full-length front rail, this upper receiver allows for a free-floated barrel. This rifle also features a gas-block mounted front flip-up sight with bayonet lug and a MaTech backup rear sight. The barrel is Colt's standard 16.1" chrome lined M4 barrel with an A2 flash hider up front.